Hand-stamp.



E. C. POTTS.

HAND STAMP.

APPLICATION FILED APR. I2. IsIe.

Patented Nov. 12, 1918.

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Para* are HAND-STAMP.

Specication of Letters Patent.

Patented NOV. 12, 1918.

Application filed April 12, 1916A. Serial No. 90,622.

To all whom it may concern.'

Be it known that I, EDWARD C. PoTTs, a citizen of the United States,residing at Richmond, in the county of I-Ienrico and State of Virginia,have invented certain new and useful Improvements in Hand-Stamps; and Ido hereby declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it appertains to make and use the same.

This invention relates to improvements in hand stamps, and has for itsprimary object to provide an improved handle movably or flexiblyconnected with the plate carrying the printing surface, therebyinsuring' a full and uniform impression of the latter upon the sheet ofpaper or other article to be printed.

With this and other objects in view, the invention consists in the novelconstruction, combination and arrangement of parts as will behereinafter specifically described, claimed and illustrated in theaccompanying drawing, in which: n

Figure 1 represents a longitudinal sectional view through the improvedhand stamp,

Fig. 2 represents an enlarged transverse sectional view therethrough,

Fig. 3 represents a longitudinal sectional view through a modified typeof the hand stamp,

Fig. 4 represents a transverse sectional view through the type of handstamp illustrated in Fig. 3,

Fig. 5 represents a sectional view through a further modified type ofthe hand stamp,

Fig. 6 represents a perspective view of thespring washer embodied in themodification illustrated in Fig. 5 removed.

Referring to the drawing in detail, wherein similar reference numeralsdesignate corresponding parts throughout the several views, the numeral5 indicates a holder plate for supporting the rubber stamp or printingsurface 6, and which is preferably constructed of sheet metal and hassecured to the upper end thereof a substantially rectangular casing 7.The top of the casing is formed with a central aperture 8 looselyreceiving a shank 9 carried by a handle 10. The end of the shank 9opposite the handle 10 is formed with a head having a semisphericalouter end 11 and a convex inner surface 12 curved eccentrically withrelation to the semispherical part 11. A washer 13 is loosely mountedupon the shank 9 and engages on one side with the convex surface 12 ofthe head and upon the opposite side with the medial portion of a curvedleaf spring 14, the ends 0f which are engaged with the casing 7 and tendto normally retain the head 11 in firm engagement with a seat orconcavity 15 formed centrally in the plate 5.

The tension of the spring 14 operating against the washer 13 and head 11normally retains the shank 9 and handle 10in a position at right anglesto the holder plate 5. The handle, however, may be moved out of itsnormal position with relation to the plate 5 and when so moved the camor convex surface 12 of the head operating against the washer 13compresses the spring 14 and thus when the handle 10 is released thetension of the spring automatically returns the handle to normalposition.

Referring in detail to the modification of the invention illustrated inFigs. 3 and 4 the numeral 16 indicates a stamp supporting plate in whichis anchored a bearing member 17, having a flanged upper end 18positioned through and securing the medial portion of a Curved spring19, having the free ends directed away from the plate 16. A secondspring 20 curved oppositely to the spring 19 is connected at its endswith the spring 19, as indicated at 21, and the Central portion isapertured to loosely receive a shank 22 carried by a handle 23. Theoutward movement of the spring 20 with relation to the holder plate 16is limited by a pair of flanges 24 embracing the medial portion of thespring 20 and having inwardly directed upper terminals 25.

One end of the shank 22 is formed with a head having a semisphericalportion 26 movably engaged in a seat or concavity 27' formed in thebearing member 17 and a convex surface 28 disposed eccentrically withrelation to the semispherical portion 26 to provide a cam surface whichengages a washer plate 29 loosely fitted upon the shank 22 and engagedwith the inner or lower surface of the spring 20.

In this type of the hand stamp, the handle 23 is normally retained in a.predetermined angular position with relation to the plate 16 by thetension of the two springs 19 and 20, one of which engages the washer 29and acts upon theJ cam convex surface 2S of the head.

Referring to the modification illustrated.

in Figs. 5 and 6, the numeral 30 indicates a holder plate in which isanchored a bearing member 3l, having a Hange 32 at one end under whichis anchored the lower flanged edge of a substantially rectangular casing33. The central portionof the upper Wall of the casing 33 is formed Withan aperture loosely receiving a shank 34 carried by a handle 35, theshank being provided at one end With ahead having a semisphericalportion 36 movably mounted in a seat or concavity 37 formed in theadjacent end of the bearing member 31. The inner surface 3S of the headis convex and curved eccentrically with relation to the semisphericalportion 36 and engaged With a Washer 39 loosely mounted upon the shank34 and arranged Within the casing 33. A spring Washer plate 40 ismounted upon the shank 34; between the Washer 39 and the top of thecasing 33 and is provided With a plurality of radially projecting springarms 4l, some of Which are directed angularly and engaged with the frontWall of the casing 33 and others being directed in the oppositedirection and engaged with the Washer plate 39 for normally retainingthe shank 34 and handle 35 in a predetermined angular position Withrelation to the plate 30.

l/Vhat I claim is:

A hand stamp including a holder plate, a substantially rectangularcasing secured to the upper side of said plate, said plate provided Witha central aperture, a handle, a shank at one end of the handle extendingthrough the casing, a head formed on the free end of the shank andhaving a convex A inner surface curved eccentrically with relationthereto, a curved leaf spring arranged Within the casing and engagingsaid head to normally retain the head in firm engagement with the holderplate, as and for the pur-v pose specified.

In testimony whereof I afiX my signature in presence of two Witnesses.

EDWARD c. Porrs.

Witnesses:

O. B. HILL, THos. F. H. CRoWDnR.

Uopesl of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents. Washington, D. C.

